Need help with adding a router to an existing Uverse setup

Need help with adding a router to an existing Uverse setup

Hello - long story but I will try to keep it short. I need to add a router to my computers built-in Ethernet port. I use Uverse wireless for Internet - my Dell has both the wireless and the built-in Ethernet ports. Once the router is connected I loose the Internet. If I hover my pointer over the wireless connection it states I am connect and that I have wireless Internet but the Browser just stalls and will not load.

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